LEGO builder Mark Puustinen created this nifty flamethrower that “works by winding a little round knob which pulls the string which pulls the lever which pushes the bottle of butane against a holder with a hole from which butane shoots out from.” Video after the jump.

This homemade LEGO flamethrower is completely built with LEGO toy building bricks. Only thing not LEGO is a piece of string and a refill bottle of butane gas which is commonly used in butane lighters and can be bought in almost any supermarket or grocery store